Kaufmann analyzed eight surveys of graduate-level professors and doctoral students, the majority of whom said they would not oppose discriminating against their right-leaning peers in some form. Ten percent of academics support outright cancelling or firing conservative professors who express their views…

Even without “punishment mechanisms,” widespread opposition to conservative views leads to “powerful conformist pressures that make people keep their mouths shut.”

Those pressures are clearly effective. Seventy percent of conservative academics reported that their department created a hostile environment for conservative ideas, according to the study. Nine in 10 Trump-supporting academics reported that they would not feel comfortable expressing their views to a colleague. And more than half of conservative academics surveyed admitted to self-censoring their research and teaching.